'Then-and-now' images from Dallas

Here's a compilation of "then-and-now" photographs created by the Houston Chronicle's Cody Duty that juxtapose archival photos — many from The Associated Press — with current image

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Secret Service climbs on back of limo

This Sept. 10, 2013 photo shows an Associated Press image taken Nov. 22, 1963, of Jackie Kennedy and Secret Service agent Clint Hill climbing on the back of the limousine after U.S. President John F. Kennedy was shot, juxtaposed with the current scene in Dallas.